A bag contains 4 white balls and 6 red balls. What is the probability that if 2 balls are drawn…

A bag contains 4 white balls and 6 red balls. What is the probability that if 2 balls are drawn (with replacement),

(a) the first ball is red and the second is white?

(b) both balls are red?

(c) one ball is red and one is white?

(d) the first ball is red or the second is white?